Disassembling The Printer Mechanism - Epson Stylus Color 660 Service Manual

EPSON Stylus Color 440/640/740

4.2.4 Disassembling the Printer Mechanism

Since Stylus Color 440/640/740 do not have the lower housing, the
printer mechanism part should already appear by now. Therefore, this
section explains procedures for disassembling the major parts or units
of the printer mechanism.
4.2.4.1 Removing the Print Head Unit
1. Remove the housing. (Refer to Section 4.2.1.)
2. Rotate the flat gear 67.2 towards yourself (front) and release the
carriage lock mechanism. Then move the carriage to the left edge.
3. Take both black and color ink cartridges out of the printhead unit.
4. Remove the blue covers for black and color ink cartridges from the
carriage assembly.
5. Remove the torsion spring 49 and one screw (No.3) and take the
fastener head out.
6. Remove the FFC being placed on the carriage assembly, and
remove the printhead unit from the carriage.
7. Disconnect the FFC from the connector on the drive board built in
the printhead unit.
See the following pages for the figures below:
Figure 4-6, "Removing the Print Head"
Figure 4-7, "Installing the Printhead"
Chapter 4 Disassembly and Assembly


Make sure that the earth board is installed to the
C H E C K
P O I N T
carriage correctly. (There are 2 pins to determine the
location.)


When you install the printhead to the carriage, make
sure that the location pin on the carriage side is placed
in the notch of the printhead.


Since the ink cartridge once taken out can not be
C A U T I O N
used again, be sure to install a new ink cartridge
when you return the printer to the user.


When you return the printer to the user, be sure to
pack the printer for transportation with a new ink
cartridge installed and the carriage in the home
position when the printer is turned on.
A D J U S T M E N T
When you replace the printhead unit, perform the
R E Q U I R E D
following adjustment. (Refer to Chapter 5 for more
details.):
1. Initial ink charge (Refer to Chapter 5/Section 5.2.2.3)
2. Head Voltage ID Input (Refer to Chapter 5/Section
5.2.2.7.)
3. Head Angular Adjustment (Refer to Chapter 5/
Section 5.2.2.8.)
4. Bi-D Adjustment (Chapter 5 /Section 5.2.2.9)
Revision A
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